docs: def process_document(self, doc: Document):
          """
          Add your code for processing the document
          """
  
          text_segments = doc.select_segments("lexisnexis.doc_description")
          for text_segment in text_segments:
              split_sentences = doc.extract(self.sentence_extractor, text_segment)
              doc.store(split_sentences, 'split_sentences')
          # for t, u in zip(text_to_be_split, units_of_text):
          #     split_sentences = doc.extract(self.sentence_extractor, t)
          #     u.store(split_sentences, "split_sentences")
          return list()